A nurse in an emergency department is reviewing a client's ECG reading.

Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?

Prolonged PR intervals.

Nondiscernible P waves.

More P waves than QRS complexes.

No correlation between P and QRS waves.

Answer and Explanation

The Correct Answer is A

First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.

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Correct Answer is C

Explanation

“You should expect a warm sensation after the injection of the contrast dye during the procedure.” During cardiac catheterization, a contrast dye is injected into the body to highlight blood flow through the arteries and show blockages in the blood vessels that lead to the heart.
This can cause a warm sensation.
Choice A is incorrect because usually, patients are awake during cardiac catheterization but are given medications to help them relax.
Choice B is incorrect because recovery time for a cardiac catheterization is quick.
Choice D is incorrect because there is no information found to support this statement.

A. "This indicates a possible air leak.". B. "This means your lung is fully re-expanded.". C. "Your breathing pattern causes this.". D. "Suction pressure that is too high causes this.".

Correct Answer is C

Explanation

The fluctuation of fluid in the water-seal chamber of a chest tube is known as tidaling and is caused by the changes in pressure within the chest during respiration.
Choice A is not correct because tidaling does not indicate an air leak.
Choice B is not correct because tidaling does not necessarily mean that the lung is fully re-expanded.
Choice D is not correct because suction pressure does not cause tidaling.

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A nurse in an emergency department is reviewing a client's ECG reading. Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?

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A nurse in an emergency department is reviewing a client's ECG reading.

Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?